[BOJ] 1159번: 농구 경기

https://www.acmicpc.net/problem/1159

 

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false), cin.tie(0);
    string s;
    string name[151];
    int n, al[26] = { 0, }, cnt = 0;
    cin >> n;
    for (int i = 0; i < n; ++i)
    {
        cin >> name[i];
        al[name[i][0] - 'a']++;
    }
    for (int i = 0; i < 26; ++i)
        if (al[i] >= 5)
        {
            s += (i + 'a');
            cnt++;
        }

    if (cnt == 0)
    {
        cout << "PREDAJA";
        return 0;
    }
    sort(s.begin(), s.end());
    cout << s;
    return 0;
}